.iframe-shell {
  position: fixed;
  top: var(--navbar-height);
  right: 0.6rem;
  width: auto;
  padding: 0.32rem;
  z-index: 19;
  .iframe-html {
    margin: 0.24rem;
    border-radius: 0.8rem;
    border: 0.24rem solid rgb(48, 57, 67);
    width: 6.4rem;
    height: 13.4rem;
  }
}